No. In more complicated expressions using a postfix operator instead of a prefix operator usually makes a difference, but not here.
for| for loop | while loop |
|---|---|
for ( initialize ; test ; change ) loopBody ; |
initialize;
while ( test )
{
loopBody;
change
}
|
Parts of a for can be omitted.
Since the three parts of a for are the three parts of any loop,
when a part is eliminated from a for it has to be done elsewhere.
Recall that the for is equivalent to a while.
You can omit the initialize part from the for loop.
It now acts the same as a while loop
with its initialize part omitted.
Doing this is useful when initialization is complicated and you wish to
do it in several statements before the loop.
For example, initialization may depend on user input:
// get initial value of count from the user here
for ( ; count < 13; count++ )
{
System.out.println( "count is: " + count );
}
System.out.println( "\nDone with the loop.\nCount is now" + count);
Do you think that the change part of a for can be omitted
(as long as it is done somewhere else)?